Recently, Facebook showing or having some problems and thus no updates on newsfeeds from others friends. If you have 100 or 200 or 400 friends, you will instantly get your friends activities from your NewsFeed. But, no changes at all. It can be happedn for two reasons. One it’s an bug or two Facebook might be updating or implementing new features on NewsFeed. Jeremy Wagstaff who is first reported about the bugs. You can read more from his blog.
However, for to fix this problem facebook team working hard and hope soon the problem will be resolved.